(NsOBRANIE SO^INENIJ (B/s - (NgALERKIN(B, (Nb(B.(Ng(B.s; (NaKADEMIQ NAUK sssrs ((NmOSKWA (B:s (NiZD(B-(NWO an sssr (B,s, 1952)
(Nt(B. 1 (1952, 391 (NS(B.)s (Nt(B. 2 (1953, 438 (NS(B.)s
Keywords: (NoB]ETEHNI^ESKIE DISCIPLINYs